This presentation goes into detail about one specific government for a civilization. I feel that to be human we always want some sort of organization and comfort to know that we are protected. Anarchy is never a good option so to be human without government and organization equals chaos and dismay. Economy is also important in that without out it, people would not be able to manage money or trade. Throughout history trade has been a key role in keeping the human race alive and kicking.
Government and Economy
See this Powerpoint for government and ecomony!